Allows the vessel to be isolated and drained for essential periodic servicing and re-charging. Shut-off and drain, for membrane expansion vessels in sealed heating and cooling systems. Protected shut / open facility against inadvertent closing. Brass, Steel & Plastic Construction

Price: £15.71 from Screwfix

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Stockist	Product Name	Price
Screwfix	Tesla Expansion Vessel Service Valve 3/4" x 3/4"	£15.71	Visit Store